3-4: Definition of supplementary angles
5: Simplify
Answer:
Mixed fraction = whole × denominator + numerator.
this formula converts mixed to improper fraction.
So, 1 × 3 + 1 = 4 is numerator.
Denominator is 3 which is same.
So, answer is
A.
<h3>
<em>Plz </em><em>mrk</em><em> me</em><em> brainliest</em><em>.</em></h3>
I think it’s -2-13x if I’m not mistaken
Answer:
By the Empricial Rule, approximately 68% of the 500 scores fell between 80 and 90
Step-by-step explanation:
The Empirical Rule states that, for a normally distributed random variable:
Approximately 68% of the measures are within 1 standard deviation of the mean.
Approximately 95% of the measures are within 2 standard deviation of the mean.
Approximately 99.7% of the measures are within 3 standard deviations of the mean.
In this problem, we have that:
Mean = 85
Standard deviation = 5
Approximately what percentage of the 500 scores fell between 80 and 90?
80 = 85 - 5
So 80 is one standard deviation below the mean
90 = 85 + 5
So 90 is one standard deviation above the mean
By the Empricial Rule, approximately 68% of the 500 scores fell between 80 and 90